private void Cstmrdtlsbtn_Click(object sender, EventArgs e) { ICustomer m_Customer; m_Customer = new CustomerClass(); CustIdlbl.Visible = false; FldNmelbl.Visible = false; string strCusId, strFldNme; strCusId = custIdTxt.Text; strFldNme = FldNmeTxt.Text; if ((strCusId == "") && (strFldNme == "")) { CustIdlbl.Visible = true; FldNmelbl.Visible = true; } else if (strCusId == "") { CustIdlbl.Visible = true; } else if (strFldNme == "") { FldNmelbl.Visible = true; } else { object VarVal = 0; m_Customer.GetCustomerDetails(strCusId, strFldNme, ref VarVal); string strMsg = VarVal.ToString(); MessageBox.Show(strMsg); } }